[Rd] rgl package demo causes R memory corruption under Windows

[Dominick Samperi]

Hello,

Running the rgl demo package (demo(rgl)) causes memory corruption when 
used with
R 2.2.0 under Windows. I tested on two Windows systems: Windows 2000 and 
Windows XP.

When you terminate R after running the demo you get a message about the 
application
trying to reference invalid memory. If you try to run another 
application in R after running
the rgl demo it typically fails.

Dominick